#Question id: 18621
#Unit 13. Methods in Biology
#Question id: 1582
#Unit 4. Cell Communication and Cell Signaling
The EBV antigen fragments will be presented by the virus-infected cells along with which of the following?
#Question id: 12043
#Unit 7. System Physiology – Animal
#Question id: 804
#Unit 1. Molecules and their Interaction Relevant to Biology
With respect to microRNAs, which, if any, of the following statements, is false?
a) A microRNA normally works by binding to perfectly complementary sequences within an RNA transcript, usually an mRNA.
b) Like the great majority of mRNAs an miRNA is usually produced as a larger precursor RNA that is capped and has a 3’ poly(A) tail.
c) The precursor miRNA undergoes different types of post-transcriptional cleavage by endoribonucleases that are specific for double-stranded target sequences.
d) A nuclear endoribonuclease called dicer cleaves the miRNA precursor so that it forms a stem-loop RNA.
#Question id: 10832
#Unit 10. Ecological Principles
Which of the following is an example of a plant chemical defence?